VERY Inconsistent CPU Hashrates With XMR STAK

[AVP]

Having a problem with very inconsistent hash rates with this miner. I'm able to sometimes (~3 times out of 10) hit my full hash rate of ~1015 H/s.

After 3 days of trying all possible BIOS, Software & Hardware configurations the problem remains and is not effected by changes. Problem seems completely random.

Sometimes when miner is started I will get ~200H/s, then just by closing the miner and reopening it I'll get ~600 and so on.

There are many similar Issue Reports of this by other users of this on GitHub, however the team dismisses them as "Hardware configuration is out of scope of GitHub forum, bla bla bla.."

This is not hardware config related issue as ~3 times out of 10 I actually get my full hash rate. So I know that my CPU thread configuration (cpu.txt) is valid.

Any advice on how to resolve this would be much appreciated. Thanks!

Basic information
- 6 identical Servers with Dual Opteron 6274 stock settings, Fully stable
- Windows 10 Pro OS, Disabled Windows Defender and all other unnecessary junk
- Tried with 1GB, 2GB, 4GB per socket - RAM has NO EFFECT on hash rate
- Tried different pools, tried different difficulty settings - NO EFFECT
- Using latest precompiled miner version

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[vmozara]

Try JCE miner which specializes in CPU mining

[tg88]

Did you try to activate low_power_mode?

or decrease the number of threads?

[AVP]

Did you try to activate low_power_mode?

or decrease the number of threads?

low_power_mode is set to false / disabled

using 28 threads, 14 per processor - I have seen recommendations to use only 8 threads per CPU, however that renders much lower hash rates.